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    SNMP::walk

    (PHP 5 >= 5.4.0, PHP 7, PHP 8)

    SNMP::walk — Fetch SNMP object subtree

    Descripción

    public SNMP::walk(
        array|string $objectId,
        bool $suffixAsKey = false,
        int $maxRepetitions = -1,
        int $nonRepeaters = -1
    ): array|false

    SNMP::walk() is used to read SNMP subtree rooted at specified objectId.

    Parámetros

    objectId

    Root of subtree to be fetched

    suffixAsKey

    By default full OID notation is used for keys in output array. If set to true subtree prefix will be removed from keys leaving only suffix of object_id.

    nonRepeaters

    This specifies the number of supplied variables that should not be iterated over. The default is to use this value from SNMP object.

    maxRepetitions

    This specifies the maximum number of iterations over the repeating variables. The default is to use this value from SNMP object.

    Valores devueltos

    Returns an associative array of the SNMP object ids and their values on success or false on error. When a SNMP error occures SNMP::getErrno() and SNMP::getError() can be used for retrieving error number (specific to SNMP extension, see class constants) and error message respectively.

    Errores/Excepciones

    Este método no lanza ninguna excepción de manera predeterminada. Para poder lanzar una excepción SNMPException cuando ocurre alguno de los errores de la biblioteca el parámetro exceptions_enabled de la clase SNMP se debería establecer al valor correspondiente. Véase la explicación de SNMP::$exceptions_enabled para más detalles.

    Ejemplos

    Ejemplo #1 SNMP::walk() example

    <?php
    $session     = new SNMP(SNMP::VERSION_1, "127.0.0.1", "public");
    $fulltree = $session->walk(".");
    print_r($fulltree);
    $session->close();
    ?>

    El resultado del ejemplo sería algo similar a:

    Array
(
    [SNMPv2-MIB::sysDescr.0] => STRING: Test server
    [SNMPv2-MIB::sysObjectID.0] => OID: NET-SNMP-MIB::netSnmpAgentOIDs.8
    [DISMAN-EVENT-MIB::sysUpTimeInstance] => Timeticks: (1150681750) 133 days, 4:20:17.50
    [SNMPv2-MIB::sysContact.0] => STRING: Nobody
    [SNMPv2-MIB::sysName.0] => STRING: server.localdomain
    ...
)

    Ejemplo #2 suffixAsKey example

    suffixAsKey may be used when merging multiple SNMP subtrees into one. This example maps interface names to their type.

    <?php
    $session     = new SNMP(SNMP::VERSION_1, "127.0.0.1", "public");
    $session->valueretrieval = SNMP_VALUE_PLAIN;
    $ifDescr = $session->walk(".1.3.6.1.2.1.2.2.1.2", TRUE);
    $session->valueretrieval = SNMP_VALUE_LIBRARY;
    $ifType = $session->walk(".1.3.6.1.2.1.2.2.1.3", TRUE);
    print_r($ifDescr);
    print_r($ifType);
    $result = array();
    foreach(    $ifDescr as $i => $n) {
    $result[$n] = $ifType[$i];
    }
    print_r($result);
    ?>

    El resultado del ejemplo sería algo similar a:

    Array
(
    [1] => igb0
    [2] => igb1
    [3] => ipfw0
    [4] => lo0
    [5] => lagg0
)
Array
(
    [1] => INTEGER: ieee8023adLag(161)
    [2] => INTEGER: ieee8023adLag(161)
    [3] => INTEGER: ethernetCsmacd(6)
    [4] => INTEGER: softwareLoopback(24)
    [5] => INTEGER: ethernetCsmacd(6)
)
Array
(
    [igb0] => INTEGER: ieee8023adLag(161)
    [igb1] => INTEGER: ieee8023adLag(161)
    [ipfw0] => INTEGER: ethernetCsmacd(6)
    [lo0] => INTEGER: softwareLoopback(24)
    [lagg0] => INTEGER: ethernetCsmacd(6)
)

    Ver también

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